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Finding the Fourth Proportional to 307,404, 424,217.52 and 173,272.80

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Solution

The fourth proportional to 307,404, 424,217.52 and 173,272.80 is: 239,116.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,404 : 424,217.52 = 173,272.80 : x
  2. Step 2: Convert to fraction form
    307,404/424,217.52 = 173,272.80/x
  3. Step 3: Cross multiply
    307,404x = 424,217.52 × 173,272.80
  4. Step 4: Simplify right side
    307,404x = 73,505,357,499.46
  5. Step 5: Solve for x
    x = 73,505,357,499.46/307,404
  6. Step 6: Final answer
    x = 239,116.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.